JP2003275525A - Air filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air filter of which the filter medium is easily replaced, without the danger of losing the component such as a lid side plate or mistaking the attaching direction of the lid side plate. <P>SOLUTION: To the upper end part of the left and right side plates 2 of the lid side plate 2a, a connection pin 6 shifted to the rear surface side of a casing 3 and a locking pin 7 shifted to the front surface side are attached. To both left and right end parts of the lid side plate 2a, a connection member 9 provided with a J-shaped oblong hole 8 to which the connection pin 6 is to be fitted and a forked pawl member 10 to which the locking pin 7 is to be fitted are attached respectively matched with the front-to-back direction positions of the connection pin 6 and the locking pin 7. By detaching the locking pin 7 from the pawl member 10, turning the lid side plate 2a and guiding the connection pin 6 along the oblong hole 8 to a tip side, the turned lid side plate 2a is withdrawn from the entire surface of a filter medium take-in/take-out port and the filter medium is easily replaced. Also, the loss of the component such as the lid side plate 2a or and the error of the attaching direction of the lid side plate 2a are prevented. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter medium exchange type air filter.

[0002]

2. Description of the Related Art An air filter used for air conditioning and ventilation in buildings and factories has front and rear surfaces opened for ventilation, and a casing surrounded by four side plates in a frame shape is pleated. A substantially rectangular parallelepiped shaped filter medium is housed facing forward and backward, and one of the four side plates is a lid side plate that can be opened and closed.
There is a filter medium exchange type in which the filter medium can be exchanged.
Usually, the lid side plates are attached to the left and right side plates with screws, and are removed and attached when the filter medium is replaced.

This filter medium exchange type air filter contributes to resource saving and waste reduction because the casing can be repeatedly used by exchanging only the filter medium. There is also a filter medium exchange type air filter in which a used filter medium is immersed in a cleaning tank while being housed in a casing, subjected to ultrasonic cleaning, and the filter medium itself is repeatedly used. The filter medium damaged by repeated use is taken out of the casing and replaced with a new one.

[0004]

In the above-mentioned conventional filter medium exchange type air filter, since the lid side plate is attached and detached by screws or the like, there is a problem that it takes time to exchange the filter medium. Further, there are problems that the lid side plate to be detached and attached components such as screws are lost, or the lid side plate is attached in the reverse direction.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an air filter in which the filter medium can be easily exchanged, and there is no fear of losing parts such as the lid side plate and mistaken attachment direction of the lid side plate.

[0006]

In order to solve the above-mentioned problems, according to the present invention, a front and rear surface is opened for ventilation, and a casing in which four sides are surrounded by side plates in a frame shape is bent into a pleat shape. A substantially rectangular parallelepiped shaped filter medium is housed in the front-rear direction, and one of the four side plates is a lid side plate that can be opened and closed, and an air filter in which the side surface of the casing in which this lid side plate is provided is the inlet / outlet port of the filter medium, A configuration is adopted in which the lid side plate is rotatable in the front-rear direction and a connecting means for connecting to the casing is provided so as to retract from the entire surface of the filter medium loading / unloading port.

That is, the lid side plate is rotatable in the front-rear direction and retracted from the entire surface of the filter medium loading / unloading port.
By providing the connecting means for connecting to the casing, the lid side plate is not separated from the casing when the filter medium is replaced,
The filter media can be easily taken in and out, and the parts such as the lid side plate are not lost or the lid side plate is installed in the wrong orientation.

As the connecting means, a connecting pin is provided at the end portion of each side plate on the left and right sides of the lid side plate on the side of the lid side plate so as to be upright toward any one end in the front-rear direction. Attaching connecting members on both the left and right sides so as to match the positions in the front-rear direction where the connecting pins are provided, and providing these connecting members with long holes extending outwardly in a J shape from the base end side to the distal end side. By inserting the connecting pins into the holes and guiding the connecting pins from the base end side to the distal end side along the elongated holes, the lid side plate is rotated in the front-rear direction to move the filter medium loading / unloading port. The method of evacuating from the entire surface can be adopted.

The connecting member is made of a flexible material, and a narrowed portion for locking the connecting pin to the proximal end of the elongated hole is provided at the proximal end of the J-shaped elongated hole. Thus, the connecting means has a function of locking the lid side plate to the casing, and the locking means of the lid side plate to the casing can be partially omitted.

By inserting a notch that penetrates the elongated hole at the tip of the connecting member, the connecting pin can easily pass through the narrowed portion of the elongated hole, and the connecting pin can be easily attached to the base end of the elongated hole. Can be locked.

At least one upright member is erected at one end on the lid side plate side of each of the left and right sides of the lid side plate to the other end side opposite to the one end side in the front-rear direction in which the connecting pin is provided. Stop pins are provided, and bifurcated flexible claw members into which the respective locking pins are fitted in the orthogonal direction are attached to both left and right sides of the lid side plate, and the base end portions of these claw members are attached to the claw members. By providing a narrowed portion that narrows the distance between the two forks, and by locking each of the locking pins to the proximal ends of the two forks of each claw member, the lid side plate can be easily locked to the casing with one touch, and it can be used like a screw. It is possible to eliminate the need for a mounting part that may be separated and lost.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. As shown in FIG. 1, this air filter has a substantially rectangular parallelepiped filter medium 1 formed by bending a non-woven fabric, a glass filter paper or the like into a pleat shape, and four sides thereof are surrounded by side plates 2 and front and rear surfaces thereof are opened for ventilation. It is stored in the casing 3, and the upper side plate is a lid side plate 2a that can be opened and closed.
This is a filter medium exchange type in which the filter medium 1 oriented in the front-rear direction is taken in and out from above.

A plurality of resin beads 4 for forming gaps between adjacent pleats are welded on the front and back surfaces of the filter medium 1 in a direction perpendicular to the pleats, and as shown by arrows in FIG. The air flowing in from the rear surface side enters the gap between these pleats, is filtered, and flows out to the front surface side.

Each of the side plates 2 and 2a is formed of a metal plate such as aluminum, and the front and rear ends thereof are flange-bent to hold the four peripheral edges of the filter medium 1.
On the front surface side of the casing 3, which is the air outflow side, a crosspiece member 5 that supports the filter medium 1 is attached across the left and right.

As shown in FIG. 2, at the upper ends of the left and right side plates 2, a connecting pin 6 that is moved to the front side of the casing 3 and a locking pin 7 that is moved to the rear side are attached inwardly, and the lid is closed. Connecting pins 6 are provided on the inner surfaces of the left and right ends of the side plate 2a, respectively.
A connecting member 9 having a long hole 8 and a bifurcated claw member 10 are attached so as to match the position of the locking pin 7 in the front-rear direction. The connecting pin 6 and the locking pin 7 are connected by a connecting member 9 respectively.
The base side plate 2 a is fixed to the casing 3 by fitting and locking the base end part of the elongated hole 8 and the bifurcated base end part of the claw member 10. In addition, when the depth dimension of the casing 3 is large, the locking pin 7 and the claw member 10 are attached to the side plates 2 and 2 respectively.
You may attach a plurality in the front-back direction of a.

The connecting member 9 is formed of a flexible resin, and the elongated hole 8 is formed so as to extend outwardly in a J-shape from the base end side to the tip end side thereof to the front side of the casing 3. There is. A narrowed portion 8a is provided at the base end of the long hole 8,
The connecting pin 6 is locked to the base end of the elongated hole 8 at this narrowed portion 8a. Further, a split 8b penetrating the elongated hole 8 is provided at the tip of the connecting member 9, and the lid side plate 2 described later is formed.
When opening a, the width of the narrowed portion 8a is widened so that the connecting pin 6 can be passed easily.

The claw member 10 is also made of a flexible resin, a tapered portion 11 is formed at the distal end of the fork, the width of which is widened, and a narrowed portion 12 is formed at the proximal end. ing. The locking pin 7 is locked to the proximal end of the bifurcated portion by the narrowed portion 12.

As shown in FIGS. 3 (a) and 3 (b), a resin ring 13 is fitted on each of the connecting pin 6 and the locking pin 7, and a brim 14 is attached to the tip end thereof.
The width of the long hole 8 of the connecting member 9 and the distance between the two forks of the claw member 10 are
Both are formed to have the same outer diameter as the resin ring 13, and the pins 6 and 7 have the outer diameter of the resin ring 13 and are fitted between the long hole 8 of the connecting member 9 and the fork of the claw member 10, respectively. The collar 14 prevents the shaft from coming off in the axial direction. The collar 14 may be formed integrally with the resin ring 13.

FIG. 4 shows a state in which the lid side plate 2a is opened. When opening the lid side plate 2a, first, the lid side plate 2a is slightly lifted in parallel, and the connecting pin 6 and the locking pin 7 are connected to the elongated hole 8 of the connecting member 9 and the narrowed portions 8a of the bifurcation of the claw member 10, respectively. , 12 out. After that, the lid side plate 2a is rotated to the front surface side of the casing 3 to pull out the locking pin 7 from the pawl member 10, and the connecting pin 6 is guided along the J-shaped elongated hole 8 to the tip side thereof. As a result, the rotated lid side plate 2a is retracted from the entire surface of the filter material loading / unloading port on the upper surface side of the casing 3.

In the above-described embodiment, the lid side plate is rotated by the engagement of the connecting member provided with the J-shaped elongated hole and the connecting pin so as to be retracted from the entire surface of the filter medium inlet / outlet port.
The means for rotating the lid side plate is not limited to that of the embodiment, and any means may be used as long as it retracts from the entire surface of the filter medium loading / unloading port when the lid side plate rotates. The lid side plate may be rotated to the rear surface side of the casing.

The means for locking the lid side plate to the casing is not limited to the method of using the claw member and the locking pin of the embodiment, and locking means such as screwing may be used.

[0022]

As described above, according to the air filter of the present invention, the lid side plate is rotatable in the front-rear direction and is connected to the casing so as to be retracted from the entire surface of the filter material inlet / outlet port. The filter medium can be easily taken in and out without separating the side plate from the casing, and it is possible to prevent the loss of parts such as the lid side plate and the wrong mounting direction of the lid side plate.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an air filter of an embodiment.

FIG. 2 is a side sectional view showing an enlarged main part of FIG.

3 a and b are IIIa-IIIa line of FIG. 2 and II, respectively.
Sectional view along line Ib-IIIb

FIG. 4 is a side sectional view showing a state where the lid side plate of FIG. 2 is opened.

[Explanation of symbols]

1 filter media 2, 2a side plate 3 casing 4 beads 5 Cross member 6 connecting pins 7 Locking pin 8 long holes 8a Narrow portion 8b split 9 Connection member 10 claw members 11 Tapered part 12 Narrow portion 13 resin ring 14 Tsuba

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3L051 BB03                 4D058 JA14 JB22 KA01 KA15 KC11                       KC12 KC32 KC42 KC81

Claims (5)

[Claims] 1. A casing having a front and rear surfaces opened for ventilation and having four sides surrounded by a side plate in a frame shape, a substantially rectangular parallelepiped-shaped filter medium bent in a pleat shape is housed in a front and rear direction, and the side plates for the four sides are formed. In any of the air filters in which any one of the above is used as a lid side plate, and the side surface of the casing provided with the lid side plate is used as an inlet / outlet port for the filter medium, the lid side plate is rotatable in the front-rear direction and the filter medium is in / out. An air filter comprising a connecting means for connecting to the casing so as to retract from the entire surface of the mouth. 2. The lid means is provided with a connecting pin that is upright to one end side in the front-rear direction at the end portion on the lid side plate side of each of the left and right side plates of the lid side plate. Connecting members are attached on both left and right sides of the connecting member so as to match the positions in the front-rear direction where the connecting pins are provided, and these connecting members are provided with elongated holes extending outwardly in a J shape from the base end side to the distal end side thereof. By inserting the connecting pins into the long holes and guiding the connecting pins from the base end side to the distal end side along the long holes, the lid side plate is rotated in the front-rear direction to move the filter medium in and out. The air filter according to claim 1, which is retracted from the entire surface of the mouth. 3. The connecting member is formed of a flexible material, and a narrowed portion for locking the connecting pin to the proximal end of the elongated hole is provided at the proximal end of the elongated hole extending in the J shape. Claim 2 provided
Air filter described in. 4. The air filter according to claim 3, wherein a split portion penetrating the elongated hole is formed at a tip portion of the connecting member. 5. At least one of the side plates on the left and right sides of the lid side plate is erected at one end of the side plates on the side of the lid side closer to the other end side opposite to the one end side in the front-rear direction in which the connecting pin is provided. Locking pins are provided, and bifurcated flexible claw members into which the respective locking pins are fitted in the orthogonal direction are attached to both left and right sides of the lid side plate, and the base end portions of the respective claw members are attached. 3. A narrowing portion for narrowing the distance between the two forks is provided, and each locking pin is locked to the proximal end of each fork of each claw member.
The air filter according to any one of 1 to 4.